Window-screen



(No Model.)

D. W. HERSEY.

WINDOW SCREEN. No. 253,047. Patented Jan. 31,1882.

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WITNESSES JNVEJV'TOR Lidttorneys UNITED STATES PATENT :OFFICEQ DAVID \V. HERSEYIOF PEMBROKE, MAINE.

WINDOW-SCREEN.

SPECIFICATION forming part of Letters Patent No. 253,047, dated January31, 1882.

' Application filed July 30, 1881. (No model.)

To all whom it may concern:

Be it known that I, DAVID W. HERSEY, of Pembroke, in the county of Washington and State ofMaine, have invented certain new and useful Improvements in Window-Screens; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

Thisinvention relates to adjustable reversible sliding window-screens, and has for its object to combine lightness, durability, efficiency, and efi'ectiveness, and at the same time be readily removable or adjustable; and it consists in certain improvements in the construction and operation of the same, substantially as will be hereinafter more fully described, and particularly pointed out in the claim.

In the drawings, Figure 1 represents a perspective view of a window to which my invention has been applied; Fig. 2,a vertical longitudinal sectionalview of the same; and Fig. 3, a horizontal sectional view on the line so or, Fig. 2.

Corresponding parts in the figures are denoted by the same letters of reference.

Referring by letter to the accompanying drawings, A designates a window-frame provided on each side with a vertical longitudinal rail, B, of wood or metal, projecting laterally from the inner sides of the frame. to form a track or guides for the screen 0, consisting of a rectangular frame, 1), transversely from the sides of which is stretched wire-gauze, netting, or anysuitablematerial,E. Oneoftheend pieces, F, of the rectangular frame D is provided with horizontal perforations G G, one above the other, each for the reception of a cylindrical casing, B, through which is passed a locking bar or bolt, I, having a knob or head, J, projecting from the cylindrical casing on the inside of the rectangular frame D, its other end projecting on the outside edge of said frame, and being notched, as shown at L, to fit or embrace the vertical rail of the window-frame.

Inside the casing H the locking bar or bolt I is provided with a shoulder, M, between which and the inner end of the casing and around the boltisinterposed a coiled spring or cushion, N. The opposite end piece, 0, of the rectangular frame D is provided on its outer edge with small projecting arms or nibs P P, notched or bifurcated like the projecting ends of the locking-bolts on the opposite end piece, to fit or embrace the adjoining vertical rail.

From the foregoing description, taken in connection with the drawings hereto annexed, the operations and advantages of my invention will be readily understood.

To attach the screen to the window it is only necessary to place the end having the notched or bifurcated arms or nibs so that the latter will embrace the rail, and then pull the locking bars or bolts,'by means of their projecting knobs or heads, toward the center, so as to draw the projecting notched ends of the bolts inside the casing. The screen is then swung around to a position parallel with the windowsash, the notched or bifurcated arms on the track at the opposite end from the spring-bolts acting as a pivot or'hinge. being released, the springs will return them to their normal position, the notched ends clampin g or embracing the vertical track-rail. The screen may then he slid vertically on the track to the desired position independent of the blinds, the pressure or tension of the spring locking-bolt being sufficient to retain it in an elevated position.

It is obvious that to remove the screen from The locking-bolts the window the operation is merely the reverse of that just described and that both operations can be accomplished from the inside without the use of ladders or other elevating means. It is evident that the screen can be reversed readily, so that the spring-bolts will press .against the opposite track.

For convenience in elevating, a knob, fingerindentations, or other suitable device may be provided on one of the transverse pieces of the rectangular screen-frame. The edges of the locking-bolts may also be beveled to automatically clamp or embrace the track-rail.

My invention is compact, inexpensive, easy of application or adjustment, and effective in operation, and may be easily applied to most of the screens now in use.

I am aware of patent to Walker, No. 56,128, July 3, 1866, and I do not wish to be understood .as claiming any part of that invention. My invention difl'ers materially from this patent, and consists in the herein-described improved construction and arrangement of parts.

Having thus described my invention, I claim as new and desire to secure by Letters Patent of the United States In combination with a window-screen adapted to slide vertically on a track and provided at one endwith the small notched or bifurcated nibs P P, the cylindrical casings H H, set in the opposite end of the screen, one above the other, and inclosing the locking bars or bolts I, having projecting notched ends adapted to embrace the track by reason of spring mechr5 anism N inside the casings, the inner ends of the bars being provided with knobs or heads J, by which the bolts may be conveniently operated to adjust the screen, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto aiiixed my signature in presence of two Witnesses.

DAVID WALLACE HERSEY.

Witnesses:

J. H. OOGGINS, DENNIS COLLINS. 

